KINETIC-STUDY OF GAS-SURFACE MOLECULAR-EXCHANGE BETWEEN CO/CO-STAR ON METALS

	KINETIC-STUDY OF GAS-SURFACE MOLECULAR-EXCHANGE BETWEEN CO/CO-STAR ON METALS
	GUO, XX; SONG, Z; ZHANG, LH; XIANG, N; ZHAI, RS
刊名	CATALYSIS LETTERS
	1992
卷号	12 期号:1-3 页码:7-16
关键词	Kinetics Of Co Exchange Kinetics Of Co Desorption Co Desorption From Metals
ISSN号	1011-372X
文献子类	Article
英文摘要	Isotopic switching technique has been used to study the exchange of gaseous CO* with chemisorbed CO molecules on metal surface. The kinetic curves observed on Re(0001) exhibit a nonlinear dependence of desorption rate on the surface coverage of CO. However, the desorption rate for CO on Rh(111) in the same temperature range is strictly linear with the coverage of CO. A concerted adsorption-desorption mechanism is postulated which emphasizes that the desorption of CO in enhanced by the pressure of gas phase CO* on the one hand, and may be retarded by the screening effect of the CO* molecule chemisorbed on the surface on the other hand. It is pointed out that the adsorption of CO* (or CO) and the desorption of CO (or CO*) on a surface at high coverage, i.e. the molecular exchange processes, are primarily taking place simultaneously and concertedly.
WOS关键词	ADSORPTION DESORPTION-KINETICS ; CARBON-MONOXIDE ; POLYCRYSTALLINE SURFACES ; CHEMISORPTION
WOS研究方向	Chemistry
语种	英语
出版者	BALTZER SCI PUBL BV
WOS记录号	WOS:A1992HG53000003
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/167586]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	GUO, XX
推荐引用方式 GB/T 7714	GUO, XX,SONG, Z,ZHANG, LH,et al. KINETIC-STUDY OF GAS-SURFACE MOLECULAR-EXCHANGE BETWEEN CO/CO-STAR ON METALS[J]. CATALYSIS LETTERS,1992,12(1-3):7-16.
APA	GUO, XX,SONG, Z,ZHANG, LH,XIANG, N,&ZHAI, RS.(1992).KINETIC-STUDY OF GAS-SURFACE MOLECULAR-EXCHANGE BETWEEN CO/CO-STAR ON METALS.CATALYSIS LETTERS,12(1-3),7-16.
MLA	GUO, XX,et al."KINETIC-STUDY OF GAS-SURFACE MOLECULAR-EXCHANGE BETWEEN CO/CO-STAR ON METALS".CATALYSIS LETTERS 12.1-3(1992):7-16.